US6381426B1 - Automatic gain control for electrostatic voltmeters - Google Patents
Automatic gain control for electrostatic voltmeters Download PDFInfo
- Publication number
- US6381426B1 US6381426B1 US09/727,217 US72721700A US6381426B1 US 6381426 B1 US6381426 B1 US 6381426B1 US 72721700 A US72721700 A US 72721700A US 6381426 B1 US6381426 B1 US 6381426B1
- Authority
- US
- United States
- Prior art keywords
- gain control
- resistor
- amplifier
- control circuit
- coupled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
- G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/727,217 US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/727,217 US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Publications (1)
Publication Number | Publication Date |
---|---|
US6381426B1 true US6381426B1 (en) | 2002-04-30 |
Family
ID=24921794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/727,217 Expired - Lifetime US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Country Status (1)
Country | Link |
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US (1) | US6381426B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998832B1 (en) * | 2004-02-26 | 2006-02-14 | Hd Electric Company | High-voltage indicating apparatus and method |
US20060245174A1 (en) * | 2004-10-12 | 2006-11-02 | Tir Systems Ltd. | Method and system for feedback and control of a luminaire |
US20070153026A1 (en) * | 2004-10-12 | 2007-07-05 | Ian Ashdown | Control apparatus and method for use with digitally controlled light sources |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106869A (en) * | 1976-11-26 | 1978-08-15 | Xerox Corporation | Distance compensated electrostatic voltmeter |
US4417804A (en) * | 1981-06-19 | 1983-11-29 | Xerox Corporation | High voltage comparator for photoreceptor voltage control |
US5243292A (en) | 1991-10-07 | 1993-09-07 | Xerox Corporation | Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof |
US5950040A (en) | 1998-05-22 | 1999-09-07 | Xerox Corporation | Feedback control system for controlling developability of a xerographic imaging device |
-
2000
- 2000-11-30 US US09/727,217 patent/US6381426B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106869A (en) * | 1976-11-26 | 1978-08-15 | Xerox Corporation | Distance compensated electrostatic voltmeter |
US4417804A (en) * | 1981-06-19 | 1983-11-29 | Xerox Corporation | High voltage comparator for photoreceptor voltage control |
US5243292A (en) | 1991-10-07 | 1993-09-07 | Xerox Corporation | Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof |
US5950040A (en) | 1998-05-22 | 1999-09-07 | Xerox Corporation | Feedback control system for controlling developability of a xerographic imaging device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998832B1 (en) * | 2004-02-26 | 2006-02-14 | Hd Electric Company | High-voltage indicating apparatus and method |
US20060245174A1 (en) * | 2004-10-12 | 2006-11-02 | Tir Systems Ltd. | Method and system for feedback and control of a luminaire |
US20070108846A1 (en) * | 2004-10-12 | 2007-05-17 | Ian Ashdown | Method and system for feedback and control of a luminaire |
US20070153026A1 (en) * | 2004-10-12 | 2007-07-05 | Ian Ashdown | Control apparatus and method for use with digitally controlled light sources |
US7573210B2 (en) | 2004-10-12 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Method and system for feedback and control of a luminaire |
US7573209B2 (en) | 2004-10-12 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Method and system for feedback and control of a luminaire |
US7738002B2 (en) | 2004-10-12 | 2010-06-15 | Koninklijke Philips Electronics N.V. | Control apparatus and method for use with digitally controlled light sources |
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Owner name: XEROX CORPORATION, NEW YORK Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A.;REEL/FRAME:034590/0513 Effective date: 20061204 Owner name: XEROX CORPORATION, NEW YORK Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANK ONE, NA;REEL/FRAME:034590/0412 Effective date: 20030625 |